Toothbrush



FIG. 1 is a perspective view of the toothbrush;

FIG. 2 is a top view thereof, the bottom being a mirror image;

FIG. 3 is a front view thereof, the rear being a mirror image;

FIG. 4 is a left side view thereof; and,

FIG. 5 is a right side view thereof.

The ornamental design for a toothbrush, as shown and described.